# OB Calc (cloud) vs SoFOP App

The clearest difference is in-app purchases: SoFOP App at none against OB Calc (cloud)'s 2. SoFOP App also leads on iOS requirement (11.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OB Calc (cloud) sells 2 in-app purchases, starting at $2.99 per month. SoFOP App asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 21, 2026 and September 1, 2026 respectively.

## The numbers

| Metric | OB Calc (cloud) | SoFOP App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 58 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Glen Botha](https://appshunter.io/developer/943181947) | [IP-Links](https://appshunter.io/developer/823709796) |

## What reviewers say

### OB Calc (cloud)

[App page](https://appshunter.io/ios/app/ob-calc-cloud/id1495610465)

This medical app helps obstetricians efficiently calculate key patient test date windows. It offers multiple calculation methods and allows for saving patient data and generating PDF reports. A free trial is available, followed by a subscription for full access.

**Highlights:** LMP, EDC, Ultrasound, CRL, and IVF calculations, Customizable test date ranges, Cross-device data syncing, PDF report generation, Save individual patient data

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Premium (Annual) | $29.99 | per year |


### SoFOP App

[App page](https://appshunter.io/ios/app/sofop-app/id1635623660)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OB Calc (cloud) free?

OB Calc (cloud) is free to download, with in-app purchases available.

### Is SoFOP App free?

SoFOP App is free to download, with no in-app purchases.

### Do OB Calc (cloud) or SoFOP App have ads?

Neither OB Calc (cloud) nor SoFOP App shows ads.

### Which is updated more often, OB Calc (cloud) or SoFOP App?

OB Calc (cloud) ships an update every 3 months, and SoFOP App every 3 months. Most recently, OB Calc (cloud) was updated on September 21, 2026 and SoFOP App on September 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*